When Arch linux is used without a specific desktop environment like GNOME or
KDE, opening a file by xdg-open works incorrectly. Particularly, GIMP is
launched for PDF instead of a dedicated viewer. There are some details on the
Arch wiki page
xdg-utils. To fix the
issue, it’s necessary to install another application association handler.

Nvim-gdb queries breakpoints from
the debugger occasionally using a side channel. For that, a unix domain socket
has to be created, bound and connected to the debugger’s side channel. So Python
was used to do that. But I realized recently that Neovim has a built-in
interpreter of full-featured Lua. Why not to give it a try? It turned out that
the effort wasn’t in vain and resulted in the complete overhaul of the plugin.

I’ve discovered that mobile hotspot stopped working right after
Kyivstar introduced 4G. Android does offer a WiFi access
point, the laptop does connect to it, but no external site can be accessed from
the laptop. It turned out that there was the bug in the
instructions. When a
new APN is created, the type should be default,dun. The reference:
Quora.

Here is a deal: you have a fine-tuned program that is precisely handling one
stream. It uses a dedicated CPU core and busy waiting to achieve sub-millisecond
accuracy. Then you realize that the program just spins the core most of the time
waiting until those tiny bits of work to be executed. Suboptimal, right? So you
decide to enhance the application to handle multiple such streams by the same
core: let it wait less, but executes more useful work. Here is how I did this
and the lessons learnt.

The first commit to nvim-gdb
happened the 16th of August, 2017. So I may safely assume that it’s the
first anniversary. The project has grown beyond my expectations really. So let’s
review most notable milestones in its development.

Here is the issue: I’m running i3 on the desktop, but still
need to have GNOME Evolution to work
with different email accounts. Evolution is configured in GNOME Online
Accounts, but
unfortunately GNOME control center wouldn’t start properly in a bare i3 session.
The solution is easy: env XDG_CURRENT_DESKTOP=GNOME gnome-control-center. It’s
also worth creating an alias for that command.

Since I started using kerberos.io, I had to decide how
to install it on my Raspberry Pi
3 running Arch
Linux ARM. First I
tried to repackage the official .deb for pacman:
PKGCONFIG.
It worked out for a while until another Arch update. Then I tried to build the machinery by myself. It turned out not
to be easy, ending up with lot of functionality disabled or not reliable.
Finally, I’ve come to yet another solution: running the genuine
raspbian contained systemd-nspawn to enable official builds following the
guide.